Dyax Corp. (NASDAQ: DYAX) announced today that executive management will
participate in the 13
th Annual Needham Healthcare Conference
being held April 8-9, 2014 at the Westin Grand Central Hotel in New York
City.

Dyax Corp. (NASDAQ: DYAX) announced today that executive management will participate in the 13 th Annual Needham Healthcare Conference being held April 8-9, 2014 at the Westin Grand Central Hotel in New York City. Gustav Christensen, President and Chief Executive Officer of Dyax, will present on Tuesday, April 8 at 2:20 PM (ET). Mr. Christensen will provide a corporate update on the Company’s key value drivers – the KALBITOR® (ecallantide) business, DX-2930 and the Licensing and Funded Research Portfolio.

This presentation will be webcast live and may be accessed by visiting the Investor Relations section of the company website at www.dyax.com. The webcast will also be available on the Dyax website for a limited period of time following the conference.

About Dyax

Dyax is a fully integrated biopharmaceutical company focused on the discovery, development and commercialization of novel biotherapeutics for unmet medical needs. The Company currently markets KALBITOR ® for the treatment of acute attacks of hereditary angioedema (HAE) in patients 16 years of age and older. Dyax is also developing DX-2930, a fully human monoclonal antibody inhibitor of plasma kallikrein, for the prophylactic treatment of HAE. Additionally, the Company owns an internally-developed biomarker assay that detects activated plasma kallikrein in blood and is being used for internal research and development efforts, including the exploration and identification of other plasma-kallikrein-mediated indications beyond HAE.

Both KALBITOR and DX-2930 were identified using Dyax's patented phage display technology. Dyax has broadly licensed this technology and has a portfolio of product candidates being developed by our licensees, which it refers to as the Licensing and Funded Research Portfolio (LFRP). The Company is eligible to receive future milestones and/or royalties dependent upon the development and commercialization of these candidates.

For additional information about KALBITOR, including full prescribing information, please visit www.KALBITOR.com.

Disclaimer

This press release contains forward-looking statements. Statements that are not historical facts are based on Dyax's current expectations, beliefs, assumptions, estimates, forecasts and projections about the industry and markets in which Dyax competes. The statements contained in this release are not guarantees of future performance and involve certain risks, uncertainties and assumptions, which are difficult to predict. Therefore, actual outcomes and results may differ materially from what is expressed in such forward-looking statements. Important factors which may affect future performance include the risks that: DX-2930 may not show sufficient therapeutic effect or an acceptable safety profile in clinical trials or could take longer to gain regulatory approval than Dyax expects or may never gain approval; others may develop products superior to KALBITOR or DX-2930; KALBITOR and/or DX-2930 may not gain market acceptance; Dyax is dependent on the expertise, effort, priorities and contractual obligations of third parties in the manufacture, marketing, sales and distribution of KALBITOR and DX-2930; and other risk factors described or referred to in Item 1A, "Risk Factors" in Dyax's most recent Annual Report on Form 10-K and other periodic reports filed with the Securities and Exchange Commission. Dyax cautions investors not to place undue reliance on the forward-looking statements contained in this release. These statements speak only as of the date of this release, and Dyax undertakes no obligations to update or revise these statements, except as may be required by law.